Therapeutic exercise device

ABSTRACT

A therapeutic exercise device for flexing various body limbs either singly or in combination, and including apparatus for positioning the hands and feet of a user for simultaneous directional movement, and yieldable resistance means adapted to be overcome by said directional movement.

United States Patent 1191 Walker I Aug. 28, 1973 THERAPEUTIC EXERCISE DEVICE [54] 2,453,771 11/1948 White et a1. 272/79 R 7 [75] Inventor: William H. Walker, Alhambra, Calif. 25:32: 5 73 z 5mm 2,374,750 5/1945 272/57 1) l 1 f' v Angeles 2,629,371 2/1953 128/25 R [22] 1972 FOREIGN PATENTS OR APPLICATIONS [211 P "9* 227,987 677,882 1/1966 Belgium 272/83 R Related U.S..Appl1cation Data P Ex L w T "'"W' e 9mm": 2 no [63] grazag of Attorney-Herbert A. I-luebner, Harlan P. Huebner et al. [52] US. Cl. 128/25 R, 272/82 [51] Int. Cl. A6111 l/02 ABSTRACT [58] Field of Search 128/25 R, 25 B, 33; A therapeutic exercise device for flexing various body 272/58, 79, 80, 82, 83 limbs either singly or in combination, and including apparatus for positioning the hands and feet of a user for 56], I References Cited simultaneous directional movement, and yieldable re- U TE T T P EN sistance means adapted to be overcome by said direc 2,405,024 7/1945 Eynon mm x 10 Claims, 7 Drawing Figures F i 7 5! 54 5 i 43 Q '1 14 a=/ 'r' \H mm 1 %F' o 27 o o 42 4! ON 0 o 4O 97 0 o 0 U o @0- g o o 46 47 95 9 o 94 31 o o l '3 o o 45 92 o 29 z 25 72 Z g 91 z e 1 f4 0 o 1 00, e 13% 7 J7 fa. I!

PATENTEU MISZB I975 SNEEI IN 3 WWI-R M1 PATENTED MIG 28 I975 SHEET 3 OF 3 1. THERAPEUTIC EXERCISE DEVICE CROSS-REFERENCE To RELATED APPLICATION This is a continuation-impart application of abandoned co-pending U.S. patent application Ser. No. 85,200, filed Oct. 29, I970, by William H. Walker and entitled EXERCISING DEVICES.

BACKGROUND OF THE INVENTION The invention relates to an exercise device for persons, and more particularly to a therapeutic exercise device whereby persons may administer physical therapy treatment to themselves and exercise their various body limbs. The invention is primarily intended for use by persons having diseased or weakened limbs, and who normally require the assistance of a trained physical therapist for the exercise and rehabilitation of these limbs. Persons suffering from partial paralysis or similar handicaps either as a result of disease or injury and who are thus unable to move one or more limbs risk the onset of morbid corpulence and other dieases which result from the lack of proper exercise for all parts of the body.

Through the use of this invention, persons retaining the use and control of one or more of their limbsmay exercise other crippled or weakened limbs without the assistance of a trained therapist or any other person. Prior to this invention, patients and partial invalids, who are unable to move and therefore exercise one or more body limbs, had to rely almost exclusively on trained therapists or similar persons for assistance in flexing and exercising their disabled limbs. However, this method is expensive due to the requirement of assistance from trained therapists, nurses, or others, and is also detrimental to the psychological stability of the other people. Also, devices heretofore available for use by persons suffering from partial or total incapacitation of one or more limbshave been expensive and cumbertheir disabled limb or limbs.

Another object of the invention is to provide an exercise device for partially disabled persons which may be used in conjunctionwith a wheelchair, a bed, or a fixed seat of any kind.

, Another object of the invention is to provide an exercise device which is adjustable to various tensions or degrees of resistance so as to be adaptable for use by persons of varying strengths.

, A further object of the invention is to provide an exercise device which is both inexpensive and easily per* table.

A further object of the invention is to provide an exercise device which enables a therapist or other person to exercise all four limbs of a patient at the same time.

Other objects, aspects and advantages of the invention will become apparent from the following descrip-' tion taken in connection with the accompanying drawings. 1

handicapped person because of his forced reliance on BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational view of the exercise device of the present invention and a wheelchair to designate the patients position;

FIG. 2 is an end view of the device of FIG. 1 as seen from the patients position;

FIG. 3 is a side elevational viewof a modification of the exercise device as adapted to be removably mounted to a wheelchair; r

FIG. 4 is a cross-sectional view of the modified exercise device taken along line 4-4 of FIG. 3;

FIG. 5 is a cross-sectional view taken on line 5-5 of FIG. 3;

FIG. 6 is a further modification of the exercise device as adapted to be mounted on a hospital bed; and

FIG. 7 is a cross-sectional view of the modification taken along line 7-7 of FIG. 6, and further illustrates a modified means of attaching the exercise device to a hospital bed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side elevational view of the device of my invention secured to patients position (dotted line 1) at metal base 2. An upright pedal foot lever 7 rises at 8 on 2 to connect at 11 by 20 inch bar 10 with handlever 3 connected with base 2 at 4, to move with lever 7. The foot lever 7 (12-14 inch) is attached at 13 with pedal (at right angle) 14 which has an opening at each side for a strap to hold disabled feet for exercise,-a foot cushion 16, a foot rest (10 inch) 17, and at back a compression spring 18 connected to'foot pedal 7 for ease and ankle exercise. Between 9 and 6 an extension coil spring (12-14 inches) between 10 and 200 lbs. tensile strength, is connected at 6 on base 2, and at foot lever 7, at bolt holes 91 up to 95 variably to increase tensile strength to suit particular requirements of individual patients in a novel arrangement. The 12-14 inch extendable, 19, hand lever 3 has a cross handle with opening to hold one or two disabled hands for exercising by motion of the pedal foot lever. The bolt holes shown are for movable connections by bolts and wing nuts; those in multilever lever connection close to 11 and 12 provide a novel arrangement to vary movements of the foot and hand lever, also to regulate distance from the user's position to the pedal, and provide user to take positions to exercise various anatomical regions. I

To provide for an additional user to exercise, an additional hand lever 43 may be connected to base 2, at 44, and bar drive 41 from 40 to 42 on foot lever 7 so it may move hand lever 43 whose cross handle 48 has two openings 49 for hand strap for attachment to a disabled user being exercised. H

To exercise totally disabled users limbs attached to pedal foot lever or hand lever, a method is provided to move Pedal Foot Lever 7 at 40 by force of bar drive v41- from hand lever 43, by means of a one-sixth I-IP electric motor, with variable speed and adjustable stroke to suitson standing may exercise by moving the hand lever, at forces (spring adjustment) regulated by the novel arrangement to change terminal positions of spring at bolt holes 9195 and by the novel arrangement and method of changing the positions of the multilevers 3 and 7 in connection with Bar 10. The hand lever has no annexed spring and moves only with the pedal lever 7 to give exercise to users not operating the pedal lever. The device is operated by exertion of foot pressure against pedal to extend coil spring, which on recoil drives the pedal back with force against users foot, back and forth for continuous exercise of the lower extremities and the abdominal region. I

More specifically, in FIG. 1, a body support member such as a wheel chair 1 generally designates the position of the patient or person using a therapeutic exercise device generally designated A. The therapeutic exercise device A is intended for use by persons assuming a seated, semi-reclined or reclining position.

A metal base 2 of the device A comprises parallel, spaced apart L-shaped channel members 2a and 2b. For increased stability of the exercise device, the base members 2a and 2b may be secured, as by welding, to a stabilizer or platform 20. The base members 2a and 2b include a series of aligned spaced apart adjustment holes 21, along their vertical portions whereby other parts of the exercise device A may be pivotally mounted.

A first means or hand lever 3 includes an end portion 22 which extends between channel members 2a and 2b, An aperture 23 through end portion 22 is aligned with a pair of the holes 21 in channel members 24 and 2b. A fastening means or nut and bolt assembly 24 passes through the bore formed by holes 21 and aperture 23 and pivotally mounts hand lever 3 to channel members 2a and 2b at pivot point 4.

A second means or foot support lever 7 is pivotally mounted between channel members 2a and 2b at pivot point 8 in the same manner as hand lever 3 is pivotally mounted between the channel members at pivot point 4.

Hand lever 3 and foot support lever 7 both have a series of adjustment holes 24 and 91 through 102, respectively, spaced at regular intervals along their lengths. Parallel linkage means or connecting bars 10a and 10b are pivotally connected with hand lever 3 at pivot point 12 and with pedal foot lever 7 at pivot point 11 by nut and bolt assemblies such as 25 which pass through bores formed by aligning adjustment holes 26 and 27 in connecting bars 10a and 10b, and adjustment holes 24 and 91 through 102, respectively, in hand lever 3 and foot lever 7.

A yieldable resistance means or coiled extension spring 5 includes flat end portions 28 and 29 and adjustment holes 30 and 31 through end portions 28 and 29, respectively. Spring 5 is pivotally connected to the base channel members 2a and 2b at pivot point 6 by means of a nut and bolt assembly (not specifically numbered) which extend through the aligned adjustment holes 21 and 30. The spring 5 is similarly connected to foot lever 7 at pivot point 9 by means of one of adjustment holes 31 which is aligned with one of adjustment holes 91-95. A pedal bar 32 having adjustment holes such as 33 is pivotally connected with foot lever 7 at pivot point 13 by a nut and bolt assembly (not numbered) which passes through one of the adjustment holes 33 in the pedal bar 32. The pedal bar 32 includes a perpendicular end-flange 34 to which a pedal14 is affixed as by bolts 15 The pedal 14 may include a foot cushion l6 and 'afoot or heel rest 17. A pedal resistance means or compression spring 18 is affixed as by welding to a pedal 14 and is pivotally connected to.

pedal foot lever 7 by a nut. and bolt assembly 35, which passes through the bored end portion 36 of the spring 18 and through one of the adjustment holes, such as hole 100 in foot lever 7. While the utilization of spring 18 is preferred in order to offer resistance to the ankles of a patient and create a strengthening of the ankles, there may be times when the spring 18 is eliminated because of the physical condition of the patient.

Dotted line 37 generally designates a chain or strap which, at the users option, may be affixed to the exercise device at holes 21 and the users seat, such as the wheelchair 1, so as to maintain the exercise device and the wheelchair in-their proper relative positions.

A hand lever extension 19 is bolted to hand lever 3 by nut and bolt assemblies 38 and 39 and includes an upper hand grip formed end portion 19a, a hand support means or cross-member 48 welded to the hand lever extension 19 below hand grip 19a, and wrist straps 49 affixed to cross-member 48 in any applicable manner.

Any forward movement of hand lever 3 away from the patients position, such as wheelchair 1 is transmitted by connecting bars 10a and 10b to pedal foot lever 7 so that levers 3 and 7 move in unison. However, since extension spring 5 normally urges or draws foot lever 7 rearwardly, the tension force of the spring 5 must be overcome in order to move foot lever 7 and hand lever 3'forwardly. While the tension spring 5 is preferably illustrated as extending to foot lever 7, it may be reversed and extend to hand lever 3 without departing from the spirit of the invention.

Assuming for purposes of illustration that a patient wishes to exercise a paralyzed leg, the patient would sit in the wheelchair 1 and use his arms to lift the paralyzed leg or legs onto pedal 14 and footrest 17. He would then grasp hand grip 19a and push the hand lever 3 away from himself and the wheelchair, thereby moving foot lever 7 forwardly by means of connecting bars and 10b, which would flex and exercise his leg or legs. The natural resistance of spring 5 which is encountered whenever foot lever 7 is moved forwardly, serves to provide additional exercise for the patients arms and legs. Compression spring 18 resists compression and provides additional means for exercise of the patients leg and foot muscles. A patient can exercise a weakened or paralyzed arm by placing the wrist of that arm in one of the straps 49 and use his legs and feet to move the foot pedal 14 and foot lever 7 assembly forwardly, thereby also moving the hand lever 3 and hand extension 19 forwardly. Extension spring 5 will then return the device to its at-rest position and the exercise can be repeated.

By means of an auxiliary hand lever assembly 43, mounted to channel members 2a and 2b at pivot point 44 in a manner similar to the mounting of hand lever 3 at pivot point 4, and a bar drive 41 which is pivotally mounted to hand lever 43 at pivot point 42 and to pedal foot lever 7 at pivot point 40, another person may utilize the device for exercise.

A therapist or other person mayassist in the exercise of all the patients limbs in unison by means of auxiliary lever 43. The patients feet can be positioned on the foot pedal 14 and his wrists placed in straps 49. The therapist can then operate the deivce bymoving auxiliary lever 43, which motion is transmitted by connecting bars 41 and a and 10b to foot lever 7 and hand lever 3.

Furthermore, the exercise device may be motorized so as toprovide exercise for total invalids, as by means of a motor 45 connected in any suitable manner to a cam roller drive 47 which moves hand lever 43 forwardly away from the wheelchair 1, and then allows spring 5 to return the device to its at-rest position. As this operation is repeated, the patients limbs are flexed and thereby exercised. While a camming operation is illustrated and preferred, any other type of motive connection with either hand lever 3 or hand lever 43 may be utilized without departing from the spirit of the invention.

It should be noted that the adjustment holes, such as holes 21 in base members 2a and 2b, holes 24 in hand lever 3, holes 91 through 102 in pedal foot lever 7, holes 26 and 27 in connecting bars 100 and 10b, and holes 30 and 31 in spring end portions 28 and 29, allow for a wide variety of adjustments in the invention to accommodate patients of varying strength and endurance. The adjustment holes provide a means for increasing the force necessary to operate the device, so that the device may be adjusted to a patients increasing capabilities as he recovers and gains strength.

In FIGS. 3 through 5, there is illustrated a modification of an exercise device A adapted to be releasably mounted to a wheelchair 1'. Parallel channel members I 2a and 2b comprise the base of the exercise device. A caster wheel 51 is affixed to the channel members 2a and 2b below their forward end portions 52.

The base channel members 2a and 2b are removably mounted on wheelchair l' by means of a stabilizer or cross channel member 53 to which the end portions 54 of the channel members 2a and 2b are welded or otherwise mounted in any suitable manner. Thus, the channel members 2a and 2b and 53 form a T-base unit in which the channel members 2a and 2b comprise the leg of the T and channel member 53 comprises the top or cross member of the T.

Channel member 53 includes a series of spaced apart mounting holes 55 at either end thereof. U brackets 56a and 56b are fitted around the normally tubular vertical portions 57a and 57b of the wheelchair conventional foot rests 58a and 58b. The U brackets 56a and 56b are. then passed through the appropriate adjustment holes 55, in channel member 53 and fastened thereto by means of nuts 59. Due to the plurality ofadjustment holes 55 in channel member 53, the exercise device A can be mounted to wheelchairs of varying widths.

'The essential structure and operation of the exercise device A is identical to that illustrated in FIG. .1 and FIG. 3.

A spring mounting member 60 is mounted between channel members 2a and 2b by means of a swing clevis pin 61 which passes. through one of the adjustment holes 21' in channel member 2a, a hole (not shown) in mounting meber 60, and another adjustment hole 21' in channel member 2b. An extension spring 5 includes an end hook portion 62 which hooks through a mounting hole 63 in mounting member 60. A second spring mounting member 64 isaffixed to foot pedal lever 7' by means of a clevis pin 65, and spring end portion 66 hooks through mounting hole 67 in mounting member 64.

Triangular mounting brackets 68a and 68b are mounted to wheelchair arm-rest posts 69a and 69b, respectively, by means of U brackets 70 which pass through holes 71 in brackets 68a and 68b, and then pass on either side of posts 69a and 69b, respectively, through holes (not illustrated) in washer brackets 72, after which nuts 73 are threaded onto the U brackets so as to hold the triangular brackets 68a and 68b in a fixed position on wheelchair posts 69a and 69b.

An arm lever mounting tube 74, see FIG. 4, passes through holes 740 in brackets 68a and 68b and extends therebetween. Bushings 75a and 75b are press-fitted or welded onto tube end portions 76a and 76b which extend outside brackets 68a and 68b. Auxiliary arm levers 77a and 77b are mounted to bushings 75a and 75b and extend upwardly past the wheelchair arms 78.

Flanges 79 are attached to arm levers 77a and 77b above the points where the arm levers are mounted to bushings 75a and 75b. Each flange 79 includes an eyelet 80, through which a hook end portion 81 of an extension spring 82 is hooked. The extension spring 82 is affixed at its opposite end to the wheelchair frame in any suitable manner. The extension spring 82 draws the arm levers 77a and 77b rearwardly toward the back of the wheelchair. Patients may obtain arm exercise by pushing the arm levers 77a and 77b forwardly so as to overcome the resistance of the spring 82.

A connecting post 83 is afiixed to tube 74 near its center, that is, directly behind hand lever'post 3'. A connecting bar 84 is pivotally mounted to post 83 at pivot point 85 by any suitable pivot means. Similarly connecting bar 84 is pivotally mounted to hand lever 3' at pivot point 86. An optional hand lever extension 19',

shown in full be mounted upon hand lever 3..

The exercise device modification may be utilized in any of several difierent ways by the person confined to the wheelchair. Connecting bar 84 may be disconnected fromeither arm lever 3' or post 83 and the arm levers 77a and 77b, in conjunction with spring 82, may be utilized to provide arm exercise. Connecting bar 84 may alternatively be connected between arm lever'3' and tube 83 so that operation of the arm levers 77a and 77b will operate the entire device. The wheelchair user can put his feet on pedal 14' and operate the arm levers 77a and 77b or extension 19 to flex and exercise his legs and arms simultaneously.

FIGS. 7 and 8 illustrate a modification of an exercise device A" designed for use on a hospitalbed. The essential structure and operation of the exercise device A" includes a pad 86 afiixed in anysuitable manner to channel members 2a" and 2b" are welded to a stabilizer or cross channel member 87. In order to maintain the device A" to a bed, an elongated mounting bracket generally deisgnated 88 is provided. The bracket being generally U-shaped includes an upper base bridge portion having a width at least complemen ary with the thickness of the bed standard 89. Depending forwardly from base bridge portion 105 is an inside wall 106, and spaced therefrom and generally parallel therewith is an outside wall 107. Each of the respective walls are provided with a plurality of aligned adjustment holes 108 and 110, respectively. The exercise device 87 abuts inside wall 106 of U bracket 88. Depending upon the height of mattress 85, a mounting hole 107 in frame member 87 will be closely aligned with one of the holes 110 inside wall 106, whereupon a mounting bolt 109 may be passed through mounting hole 108 and 110 of bracket 88, and a nut 111 may be fastened onto bolt 109 so that the exercise device is firmly mounted to the bed standard 89.

Channel member 87 may be provided with a series of mounting holes 112, as seen in FIG. 7. U brackets, such as 113 may be passed through holes 112 and on either side of the vertical posts of bed standard 89 and secured in any suitable manner to provide additional means for mounting the exercise device A to a hospital bed. The plurality of holes 112 allows mounting to various width beds.

Although I have herein shown and described my invention in what I have conceived to be the most practical and preferred embodiments, it is recognized that departures may be made therefrom within the scope of my invention.

I claim:

1. A therapeutic exercise device particularly adapted for exercising the limbs of a human which limbs may be paralyzed or impaired and said device adapted for use in conjunction with a body support member comprismg:

a base adapted to be fixedly positioned adjacent a body support member;

first means pivotally mounted on said base adapted to be engaged by the hands of the, user;

second means pivotally mounted on said base adapted to be engaged by the fact of the user;

'rigid linkage means interconnecting said first and second means for simultaneous movement of both said means in one direction or the other; and yieldable resistance means coupling said base and one of said first or second means to provide a force to be overcome by the user in pivoting said first or second means.

2. A therapeutic exercise device as defined in claim 1 wherein said pivotally mounted first means comprises a rigid, elongated hand lever, hand support means including means for securing the wrists of said user to said support means, and a plurality of adjustment holes for the mounting of said linkage means at multiple positions on said hand lever.

3. A therapeutic exercise device as defined in claim 1 wherein said pivotally mounted second means comprises a rigid, elongated foot support lever, a foot support pedal pivotally mounted upon said lever to engage the feet of said user, yieldable pedal resistance means forming a second coupling between said lever and said foot support pedal, and a plurality of adjustment holes for the mounting of said foot support pedal, said linkage means, and said resistance means at multiple positions on said foot support lever.

4. A therapeutic exercise device as defined in claim 1 wherein said base comprises parallel, spaced apart, channel members having a plurality of aligned adjustment holes whereby said first means, said second means, and said resistance means may be pivotally mounted at multiple, selectable positions along said base to vary the amount of force necessary to overcome said yieldable resistance means.

5. A therapeutic exercise device particularly adapted for exercising limbs of a human, which limbs may be paralyzed or impaired and said device adapted for use in conjunction with a body support member comprismg:

a stationary base positionable in an aligned adjacent relationship with said body support member;

foot lever means pivotally secured to said base and projecting vertically therefrom, for movement toward and away from said body support member and including a foot support to receive the feet of said human;

hand lever means pivotally secured to said base and projecting vertically therefrom and adapted to pivot in a common vertical plane with said foot lever means and spaced from said foot lever means and including a hand support to receive the hands of said human;

rigid link means above said base secured to said foot lever means and said hand lever means whereby pivoting of one of said means will simultaneously impart pivoting to said other means; and

yieldable tension means extending from said base to one of said pivot means biasing one of said pivot means yet yieldable upon pivotal movement of one of said pivot means whereby said biasing may be overcome and said pivot means are pivoted and the limbs of said human are flexed.

6. A therapeutic exercise device as defined in claim 5 wherein said yieldable tension means is a tension spring interposed between said base and said foot lever,

whereby movement away from said body support member of said foot or said hand lever will overcome said tension, and said spring is adjustable to vary the tension thereof.

7. A therapeutic exercise device as defined in claim 5 wherein power means is associated with said one of said lever means to pivot said lever means and overcome said yieldable tension means.

8. A therapeutic exercise device as defined in claim 5 wherein said foot lever means, said hand lever and said rigid link means each contain a plurality of adjustment settings whereby the respective interconnections may be changed.

9. A therapeutic exercise device as defined in claim 5 wherein said device includes stabilizing means adapted to be fixedly positionable with respect to said body support member.

10. A therapeutic exercise device as defined in claim 5 wherein an auxiliary hand lever is connected to said foot lever means whereby external manual force may be used to activate said device. 

1. A therapeutic exercise device particularly adapted for exercising the limbs of a human which limbs may be paralyzed or impaired and said device adapted for use in conjunction with a body support member comprising: a base adapted to be fixedly positioned adjacent a body support member; first means pivotally mounted on said base adapted to be engaged by the hands of the user; second means pivotally mounted on said base adapted to be engaged by the fact of the user; rigid linkage means interconnecting said first and second means for simultaneous movement of both said means in one direction or the other; and yieldable resistance means coupling said base and one of said first or second means to provide a force to be overcome by the user in pivoting said first or second means.
 2. A therapeutic exercise device as defined in claim 1 wherein said pivotally mounted first means comprises a rigid, elongated hand lever, hand support means including means for securing the wrists of said user to said support means, and a plurality of adjustment holes for the mounting of said linkage means at multiple positions on said hand lever.
 3. A therapeutic exercise device as defined in claim 1 wherein said pivotally mounted second means comprIses a rigid, elongated foot support lever, a foot support pedal pivotally mounted upon said lever to engage the feet of said user, yieldable pedal resistance means forming a second coupling between said lever and said foot support pedal, and a plurality of adjustment holes for the mounting of said foot support pedal, said linkage means, and said resistance means at multiple positions on said foot support lever.
 4. A therapeutic exercise device as defined in claim 1 wherein said base comprises parallel, spaced apart, channel members having a plurality of aligned adjustment holes whereby said first means, said second means, and said resistance means may be pivotally mounted at multiple, selectable positions along said base to vary the amount of force necessary to overcome said yieldable resistance means.
 5. A therapeutic exercise device particularly adapted for exercising limbs of a human, which limbs may be paralyzed or impaired and said device adapted for use in conjunction with a body support member comprising: a stationary base positionable in an aligned adjacent relationship with said body support member; foot lever means pivotally secured to said base and projecting vertically therefrom, for movement toward and away from said body support member and including a foot support to receive the feet of said human; hand lever means pivotally secured to said base and projecting vertically therefrom and adapted to pivot in a common vertical plane with said foot lever means and spaced from said foot lever means and including a hand support to receive the hands of said human; rigid link means above said base secured to said foot lever means and said hand lever means whereby pivoting of one of said means will simultaneously impart pivoting to said other means; and yieldable tension means extending from said base to one of said pivot means biasing one of said pivot means yet yieldable upon pivotal movement of one of said pivot means whereby said biasing may be overcome and said pivot means are pivoted and the limbs of said human are flexed.
 6. A therapeutic exercise device as defined in claim 5 wherein said yieldable tension means is a tension spring interposed between said base and said foot lever, whereby movement away from said body support member of said foot or said hand lever will overcome said tension, and said spring is adjustable to vary the tension thereof.
 7. A therapeutic exercise device as defined in claim 5 wherein power means is associated with said one of said lever means to pivot said lever means and overcome said yieldable tension means.
 8. A therapeutic exercise device as defined in claim 5 wherein said foot lever means, said hand lever and said rigid link means each contain a plurality of adjustment settings whereby the respective interconnections may be changed.
 9. A therapeutic exercise device as defined in claim 5 wherein said device includes stabilizing means adapted to be fixedly positionable with respect to said body support member.
 10. A therapeutic exercise device as defined in claim 5 wherein an auxiliary hand lever is connected to said foot lever means whereby external manual force may be used to activate said device. 